12320130021 has 16 divisors (see below), whose sum is σ = 17145509760. Its totient is φ = 7854271040.

The previous prime is 12320129989. The next prime is 12320130041. The reversal of 12320130021 is 12003102321.

It is a cyclic number.

It is not a de Polignac number, because 12320130021 - 2⁵ = 12320129989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320130041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270691 + ... + 312911.

It is an arithmetic number, because the mean of its divisors is an integer number (1071594360).

Almost surely, 2^12320130021 is an apocalyptic number.

It is an amenable number.

12320130021 is a deficient number, since it is larger than the sum of its proper divisors (4825379739).

12320130021 is a wasteful number, since it uses less digits than its factorization.

12320130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46476.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12320130021 its reverse (12003102321), we get a palindrome (24323232342).

The spelling of 12320130021 in words is "twelve billion, three hundred twenty million, one hundred thirty thousand, twenty-one".